Neonatal clinical status (A range of clinical information will be collected including infant weight, Apgar scores, hemodynamic parameters such as blood pressure and heart rate as well as physical examination findings and hospital course)

Area under the plasma concentration-time curve (AUC) of amlodipine and losartan: from time zero to time t (AUCt), from time zero to infinity (AUCinf) and time t to infinity as a percentage of total AUC (%AUCex)